Doesn't both MDB and ACCDB use Jet so shouldn't they both support it?
If you use the mdb format, then you most certainly can use ULS with access
2007.
It is only when you use the accDB format that you using a "new" version of
the jet engine (called ACE), and in that case, you don't have ULS.....
So, ULS still can be used in a2007, you just have to stick to the mdb format
.....